A Chihuahua strikes a dignified pose on a circa-1830s English chair in the library of a relaxed yet elegant Long Island retreat decorated by designer Mariette Himes Gomez. (August 2012)

Photo: Roger Davies

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Dachshunds Charlie, left, and Daisy eagerly await mealtime in the breakfast area of George Stephanopoulos and Ali Wentworth’s Manhattan apartment, which was designed by Michael S. Smith. (March 2012)

Photo: Scott Frances

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Designer Genevieve Faure’s dog, Duccio, perches on an Oscar de la Renta armchair in the living room of a Dominican Republic beach retreat decorated by Faure. (July 2011)

Photo: Oberto Gili

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Works by Andy Warhol, Ed Ruscha, and Jasper Johns surround rescue dogs Molly, left, and Puppy in the foyer of an art-filled Philadelphia home renovated by interior designer Thomas Jayne. (August 2012)

Photo: Roger Davies

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An outdoor dining area in the courtyard of Linda Ronstadt’s Mediterranean-style house—which interior designer Christy Martin helped create in Tucson, Arizona—provides a shady spot for Sally Mae, one of the singer’s three cats. (October 2004)

Photo: Robert Reck

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Pomeranian Bunny—one of Ozzy and Sharon Osbourne’s 12 dogs—enjoys some quiet time away from the rest of the pack in Sharon’s Los Angeles home office, which was decorated with fashion photography and Farrow & Ball wallpaper by interior designer Martyn Lawrence-Bullard. (June 2011)

Austin the Doberman eyes the pool at technology and media executive David Steward and chef Pierre Friedrichs’s spacious East Hampton home, built by architect Michael Haverland. (October 2009)

Photo: Paul Warchol

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Molly, left, and Finnegan, the terriers of gallery owner Sean Kelly and his wife, Mary, enjoy the sweeping views from a reading corner in the couple’s modern Hudson Valley retreat. (November 2011)

Photo: William Waldron

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At this 24-room Manhattan apartment decorated by David Kleinberg, the homeowners’ English bulldog, Bruce, greets guests in the limestone-paved gallery space, which includes works by Frank Stella (left) and Jean-Michel Basquiat. (June 2011)

Photo: Eric Piasecki

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Down the hall from Bruce the English bulldog in the David Kleinberg–designed Manhattan apartment, Emma, a Siamese cat, finds respite in the daughter’s vibrant toile de Jouy–accented bedroom. (June 2011)

Photo: Ken Hayden

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Interior designer Jennifer Post created a serene vacation home in a Miami Beach high-rise for a family of five and their dog, Zeek, who stands with a Bernar Venet steel sculpture in the living room. (July 2009)